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sineoko [7]
3 years ago
10

An expression is shown. Help pls asap

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
8 0

First, start by using the square roots. The square root of x^2 is x, and the square root of x^5 is x^2.5. Then , multiply by adding the exponents, so x * x^2.5 is x^(2.5+1), since x can also be written as x^1. Lastly, simplify by adding 2.5 and 1 and get x^3.5

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Simplify: (x+7)(x-4)
SVETLANKA909090 [29]

Answer:

x² + 3x - 28

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor

(x + 7)(x - 4)

= x(x - 4) + 7(x - 4) ← distribute both parenthesis

= x² - 4x + 7x - 28 ← collect like terms

= x² + 3x - 28


6 0
3 years ago
I REALLY NEED HELP!!! If someone can answer this quickly and correctly I will give them Brainliest. 1. What is the function rule
Rainbow [258]

Answer:

y= -4x + 3

Step-by-step explanation:

Because the slope is -4/1 which is the same as 4 and 3 is the y-intercept.

Here's the work;

We can just use the first two coordinates which are (0,3) and (1,-1) to get from the x-value 0 to 1 we add 1. and to get from the y-value 3 to -1 we subtract 4. Therefore the slope is -4 and the y- intercept (when x is zero) is 3. Pop that into slope intercept form to get y=-4x +3

Hope that helps and have a great day!

3 0
3 years ago
I need help on this,
kondor19780726 [428]

Answer:

C

Step-by-step explanation:

You can eliminate answer A because when X=1, Y must equal 33.75 not 33.

You can eliminate answer B because when X=0, Y must equal 0 not 1.

You can eliminate answer D because this answer has the X and Y coordinates reversed.  When X=1, Y= 33.75.  When X=4, Y=135, etc.

8 0
3 years ago
Find the area of the semicircle please .
NeX [460]

Answer:

39.25

Step-by-step explanation:

the formula is a = (3.14 × r^{2}) / 2

the equation is a = (3.14 ×5^{2}) / 2

5 is the radius

1. 5^{2} = 25

2. 3.14 × 25 = 78.5

3. 78.5 / 2 = 39.25

I hope this helped! :)

3 0
3 years ago
Read 2 more answers
There were 630 concert tickets sold. Each ticket cost $21. How much money was raised from selling the tickets
Andrew [12]

Answer:

$13,230

Step-by-step explanation:

you need to multiply the cost of the ticket by the amount of tickets sold,

630 x 21 = $13,230

8 0
3 years ago
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